.banner > ul {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
}
.banner ul > li {
  width: 1232px;
  height: 460px;
}
.banner ul > li a {
  width: 100%;
  height: 100%;
  z-index: 10;
}
.banner ul > li img {
  display: block;
  width: 100%;
  height: 100%;
}
.banner ol {
  position: absolute;
  bottom: 20px;
  left: 50%;
  display: flex;
  justify-content: center;
}
.banner ol > li {
  float: left;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid #fff;
  margin: 0 5px;
}
.banner ol > li.active {
  background: orange;
  opacity: 0.8;
}
